Global Patent Index - EP 1654056 A1

EP 1654056 A1 20060510 - METHOD FOR PREPARING MICROCAPSULE BY MINIEMULSION POLYMERIZATION

Title (en)

METHOD FOR PREPARING MICROCAPSULE BY MINIEMULSION POLYMERIZATION

Title (de)

VERFAHREN ZUR HERSTELLUNG VON MIKROKAPSELN DURCH MINIEMULSIONSPOLYMERISATION

Title (fr)

METHODE DE PREPARATION D'UNE MICROCAPSULE PAR POLYMERISATION EN MINI-EMULSION

Publication

EP 1654056 A1 20060510 (EN)

Application

EP 04774070 A 20040703

Priority

  • KR 2004001644 W 20040703
  • KR 20030045056 A 20030703
  • KR 20030055845 A 20030812
  • KR 20030077920 A 20031105
  • KR 20040003651 A 20040119

Abstract (en)

[origin: WO2005002719A1] Provided is a method for preparing uniformly sized and shaped, mono-dispersed microcapsules using miniemulsion polymerization. In microcapsules prepared by the method, a liquid or solid core encapsulated by a polymer shell has 10 to 80 % by volume of the microcapsules. Since miniemulsion particles produced at an early stage of the method are stable, an organic material which is well dissolved in monomer particles and has a higher interfacial tension with water, relative to the polymer shell, can be uniformly positioned in polymer particles. Furthermore, when a crosslinking agent is added during the polymerization, single-core microcapsules can be obtained. In addition, use of an oil-soluble initiator can prevent formation of secondary particles and addition of a secondary initiator during the polymerization can increase the yield of the uniformly sized and shaped microcapsules.

IPC 1-7

B01J 13/14

IPC 8 full level

C08J 3/12 (2006.01); B01J 13/14 (2006.01); C08F 2/24 (2006.01)

CPC (source: EP)

B01J 13/14 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2005002719 A1 20050113; CN 1816389 A 20060809; EP 1654056 A1 20060510; EP 1654056 A4 20070808; JP 2007528286 A 20071011; US 2006281834 A1 20061214

DOCDB simple family (application)

KR 2004001644 W 20040703; CN 200480019016 A 20040703; EP 04774070 A 20040703; JP 2006518540 A 20040703; US 56352304 A 20040703